Well drill



Nov. 24, 1931.

L. TOMANEK \WELL DRILL Filed Sept. 4, 1930 Imf enf g 1 272022 MM wencountered in drilling for a novel and efiicient I ing the invention 10Patented Nov. 24, 1931 UNITED STATES LOUIS TOMANEK, OF

PATENT CHICAGO, ILLINOIS This invention has for its object to providedeep-well drill of simple construction and easily operableinsubstantially the ordinary way common to devices of this character toeffect drilling through all types of geological formations ordinarilyoil, gas, or water. 11 the accompanying drawings illustratig. 1 is avertical sectional view of a pipe lined drill hole in course of beingextended to greater depth by means of a drill con-r structed inaccordance with this invention.

Fig. 2 is an enlarged vertical sectional view of the pipe and the drillof the present invention disposed therein and illustrating details ofconstruction of the latter.

Fig. 3 is a bottom plan view of the drill.

The drill of this invention comprises a cylindrical head 1 preferablyintegral with a point element 2, the element 2 tapered and ofappreciably smaller diameter at its upper and larger end than saidhead 1. Between its ends said point element 2 is provided with a seriesof longitudinal recesses 3 alternating with longitudinal ribs 4 havingsharp side edges 5 which partly overhang the recesses 3. The latter arespaced appreciably from the lower extremity of said point element 2which is flat bottomed.

At the other or upper end ,ofthe head 1, there is provided a shank 6which is externally threaded to engage in the threaded socket of thecylindrical block 7. The latter and the drill element 1-2, are providedwith axial bores 8 and 9, respectively, communicating with each other.The upper end portion of the bore 8 is threaded to receive and en gagethe eye-bolt 10 by means of which the block 7 and drill element'12 aresuspended from the cable 11 or other elementby means of which said drillcated.

In the block 7 there is provided an inclined bore which communicates atits lower end with the bore 8 ofsaid block and is adapted to be suitablyconnected at its upper end with a tube or pipe 13.

The drill element and block 7 are preferably disposed within a pipe 14of slightly element may be reciprogreater diameter than the OFFICE 7 soas to provide a free annular space about the last mentioned elements.

In operation, the lower end of the is set upon the pipe 14 groundconcentric with the proposed drill-hole and the drill assembly is tereupon reciprocated in such manner that,

will

after being raised, it

blow

lmpart consecutive to cause the lower to crush and pulverize ro ermaterial. As said drop by gravity to s which will serve end of pointelement 2 ck or displace softpoint element penetrates the earth to adepth suflicient to bring the ribs 4 into contact be removed, the sharpwith the material to side edges 5 of said ribs will cut into the same toremove it gradually, all material encountered being comminuted by theaction of the drill element.

This comminuted material is preferably removed by means of'fluid underpressure, preferably water, supplied from a suitable' source through the13, this fluid serving to carry the comminuted material up through thespace betwe the pipe 14.

en the head 1 and The pipe 14 constitutes a guide for the drill assemblywhich,

in practice, rotates slowly or is rotated slowly during reciprocationeither automatically or by force suitably exerted upon th 11, the pipe14 being for intervals to cause it to terial in its path which away bythe drill assem e suspension element ced downwardly at break down the mamay not be broken bly.

ractice has demonstrated, that if element 11 consists of a rope orcable, the drill assembly will automatically rotate durin reciprocationso that the sharp edges 5 o the ribs 4 will seldom strike place duringconsecutive twice in the same strokes. The drill assembly will alsobecome slightly canted or will wabble about its longitudinal axis sothat the drill hole produced thereby will be of appreciablycylindricalportion 1 w greater diameter than the hich operates below thelower end of the pipe 14 so that the latter 'may be quite readily Iclowered at intervals. mm as my invention:

1. A well drill head comprising an integral K member having a cylindrical upper end porliead 1 and block I2 I r 11,933,477-

. tion andatapered pointportion constituting an inverted truncated cone,said point or- I i tion being provided with aplurality of ongitudinalrecesses having their lower ends spaced from the lower extremity of said1 head and having theirupper ends disposed substantially flush with thelower end of the cylindrical portion, said recesses defining I a seriesof-ribs having sharp side edges.

: '2. c A drill head comprising an integral I member havingacyli'ndrical upper end.por- ,tion and a tapered point portionconstituting an inverted truncated c0ne,-the base of which f corresponds'in diameter with said cylindrical portion, said point portion equippedwith aseries of longitudinal recesses spaced from the lower extremity ofsaid-point portion v and terminating substantiallyat the lower end ofsaid cylindrical portion, said-recesses v 20 defining-a series of ribshaving sharp, paral v lel side edges extending coincidentally with csaid recesses. 1- 3. drill head comprising an integral member having acylindrical upper end por 5 tion and a tapered point portion constituting'a-n inverted truncated cone, the base of, which corresponds indiameter with said cylindrical portion, said point portion 1 equippedwith a series of longitudinal recesses I .50 ,spacedfrom the lowerextremity of said point portion and'terminating substantially atjahelower end of said cylindrical portion, said recesses defining'a seriesof ribs having sharp,-parallel side edges extending co-- '55incidentally with said recesses, the said. side edges vof said ribsbeing sharp and over hanging the mouthsof said recesses.

In testimony whereofiI have hereunto set a my hand this-2nd dayofSeptember, 1930..

, LOUIS TOMANEKY.

